<mat-grid-list cols="24" rowHeight="85px">
  <!--  标题部分-->
  <mat-grid-tile colspan="24">
    <app-top-title></app-top-title>
  </mat-grid-tile>
</mat-grid-list>
<mat-grid-list class="content" cols="24" rowHeight="fit">
  <!--正文部分-->
  <mat-grid-tile [colspan]="24">
    <!--  侧边栏-->
    <mat-drawer-container class="content-container">
      <mat-drawer mode="side" #drawer opened>
        <app-left-nav></app-left-nav>
      </mat-drawer>
      <mat-drawer-content>
        <app-index-content></app-index-content>
      </mat-drawer-content>
    </mat-drawer-container>
  </mat-grid-tile>
</mat-grid-list>
